Cloth roll wind-up mechanism



Jan. 27, 1931. r v. LINDSJO CLOTH ROLL WIND-UP MECHANISM Filed Oct. 21,1929 km s nTor. Verner Lindsj o 51W ATTys.

Patented Jan. 27, 1931 UNITED- STATES PATENT OFFICE I 1 VERNER LINnsJoor HOPEDALE, MAssAcnUsErrs, AssIeNoR 'ro ,DRAPER conro- RATION,

CLOTH' ROLL wmnnr MECHANISM OF HOPEDALE, MASSACHUSETTS A CORPORATIONOFMAINE Application sled; October 21, 1929. Seria1 No.4Q1,077.-

This invention relates to loomsjand par ticularly to the-mechanismemployed in the loom ,to manipulate the cloth roll. [The finvention hasfor its general" objectto provide' a more convenient and flexible meansto raise and lowerthe cloth roll and to adjust the tension oftheyielding means moves thecloth rollinto position.

7 A further object of the invention is to provide a mechanism of; thecharacter above described having a removable operating handle which whenin operative positionw-ill. extend a convenient distance from the loomin order to be readily grasped by the operator.

"The object of the invention isfurther to provide means operable tolockthe wind-up mechanism against rotation when the operating handle isremoved, said means being which held'out of locking engagement thehandle when in its operative position. Preferably,

such means will act automatically to lock the shaft against rotationupon removal of the handle. 7 I hese and other objects and features willmorefully appear from the following de scription in connection with thedrawings vand will be particularly pointed out .in the claims. i I Inthe drawings:

bodying the principles ofthe invention. a

Fig. 2 1s a transverse sectional view on line 22 Fig. v1.

Only those elements of the loom directly associated with theimprovements herein presented are illustrated. It is consideredunnecessary to further describe the loom since those skilled in the artwill readily perceive the adaptation of the present improve 0 ments tothe loom in general.- The present invention is particularly adapted tothe type of loom in which the cloth roll is maintained in contact withthe take-up roll and frictionally driven thereby and in which the clothroll moves down as the cloth mass thereon increases in size. v

In the particular embodiment shown a take-up roll 1 is journalled in theloom frame in the usual or any convenient mannerand is driven inanysuitable way as by means of Fig. 1 is a front elevation of a loomemthe gear 2 mounted on theta-ke-up roll shaft.

Te gear 2 meshes with the usual (take-up gear train not shown. The clothroll 3 is located. beneath the take-up roll and is supported in contacttherewith the rack bars a {which are guided in the take-up -stands5'and'6on either side oftheloom. The upper ends of-the rack bars areprovided with hearings to receive the. journals 7 and 8 of the clothroll.' The take-up stands are sec'uredat their lower ends to the'usualgirt 9 extending across the loom between the loom sides 10 andll. Thetake-up stands 5 and 6 are secured at their upper ends tothe breast Ybeam '12. A shaft 13 is journalled in the lower ends of the take-upstands. 5 and6 and has secured at each endthereof sprockets 14 and15overwhich passrespectively sprocketchains 16 and 17.1 The chain .16extends upwardly and embraces a sprocket 18 while the chain 17 drives asprocket'l Gears 20 and 21 are secured to the sprockets 18 and 19respectively with their axes in alinement. The sprocket 18 andthe gear20 are. mounted for rotation upon a stud shaft 22 fixed in the take-upstand 5; .The other sprocket 19 with its gear'21 are rotatably V mountedon a stud shaft 23 fixed in the takeup stand 6. Thestud shafts 22 and 23are so positioned thatthegears20 and 21 mesh with the rack barsft oneither side of the loom. 1

Situated'intermediate of the sprockets 14; and 15 at the ends of theshaft 13 is aworm gear 24 loosely mounted on the shaft and to. which issecured one end of a helical spring 25 surrounding the shaft. The otherend of the spring is secured to a collar 26 rigid with the shaft.Journalled in the cross girder is a wind-up shaft 27 extendingtransversely of the cloth roll and the-cross shaft 13. The windsupshaft. 27 has secured at. one end a worm 28 which engages and drives theshaft 27 is rotated thus rotating' the worm worm gear 24; To raise thecloth roll the spring 25. The tension ofithespring is transmittedthrough the collar. 26 to the shaft 13which is rotated thereby. Themotion of the shaft is transmitted equally to the rack bars 4 throughthe sprocket and chain connections to the gears 20 and 21 meshing withthe rack bars. The cloth roll is thus raised and maintained in parallelrelation to the take-up roll.

By means of the mechanism above described the cloth roll can be raisedor lowered and the tension in the spring may be varied at will. As themass of cloth on the cloth roll is built up the rack bars are forceddownwardly which results in rotating the shaft 13 to increase thetension in the spring since the gear 2 5i is held against irotation'byqengagement wlth the worm 28.

creased tension 1s deslrable' as it compensates This infor the increasedweight of the roll ,asmore cloth is wound thereon andthus maintains asubstantially uniform pressure of the cloth roll with the take-up roll.At all times during-the operation of the loomthere is a substantialtorque tending. to rotate the gear 24. This torqueincreases asthe massof cloth is built up and reaches its maximum when the cloth roll hasreceived all that it tent and establishes a slow drive which ifpermitted .to act would eventually lower the cloth roll which obviouslyis an undesirable condition. p i I V The present invention aimstoprevent this rotation of the wind-up shaftby looking it in a novel andpositive manner. The shaft 27 passes through the girder 9 and is supported in bearings 29 and 30. secured to the front and rear faces of thegirt 9. A sleeve 31 is secured at the front end of theshaft 27 by meansof a set screw 32. A semi-cylim drical portion is removed from the frontend of the shaft 27 to provide a driving connection with an operatinghandle hereinafter to be described. Any other convenient means may beemployed to establish this connection; The sleeve 31 extends beyond thefront end of the shaft 27 to form a recess 33 which receives anextension shaft 34: upon the end of which is an operating handle 35. Theinner end of the extension shaft is shaped complementary to that of theend of the shaft 27 so that when the ends of the shafts are inengagement a driving connection is established therebetween. Extendingsubstantially horizontally from the lower portion of the bearings 29,are a .pair

of ears '36 between which is pivoted a latch member 37; Cooperating withthe latch are a plurality of notches 38 in the end of the sleeve 31.

The latch member is so positioned relative to the extension shaft thatwhen the shaft is in .operative'position the end of the latch engagessaid shaft and is held out of engagement with the notches as shown indotted lines in Fig. 2. When the-handle is in this position thereforethe latch cannot act to'lock' the shaft 27. 'VVhen the'handle :isremovedhowever the latchinay be swung into position to engage a notch in thesleeve thus locking the shaft against rotation. The

latch member may have any desirable form but-preferably is constructedto act automatically upon removal of the handle to prevent rotationof;the shaft.i In the embodiment herein disclosed the latch isgravity-operated. A weighted arm 40 extends below and to the rear ofthe'pivot point 39 and upon'rem oval of the shaft acts automatically tomove the latchinto engagement .withthe endof the'sleeveand'when theshaft rotrtes sufficiently into one of the notches in the sleeve. v

Any suitable form of wind-up shaft may be employed with or without anextension shaft. The particular'mechanism shown is adapted for use onalloom where itis contemplatedto buildup a cloth roll to a size limitedonly by the position of the girder 9 as indicated by thefcu'rveddottedline in Fig. 2. Under suchcircumstanc'es itbecomes difficult toreach under thefroll to manipulate the-wind-up shaft. It becomesdesirabletherefore to provide an extension so that-the handle will'be ina convenient position. This extension may be aslong as desired since itis normallyremoved from the loom and is used onlyw-hen the operatordesires to raise or lower the clothv roll. Upon removal of the handleand its extension shaft thelatch is permitted to engage the sleeve underthe ac tion of the weighted arm 40. If. the'vibra tion of theloom tendsto rotate the wind-up shaftlit can only move until a notch in thesleeveregisters with the latch at which time the latch will enter thenotch and positively lock the shaft against further movement.

' Having thus described the invention, what is claimed as new, anddesired to be secured by Letters Patent, iszi 1. A loom comprising adriven take-up roll, a cloth roll upon which the cloth is wound bythe'frictional engagement of'the cloth mass thereon with thet'ake-u'proll. a wind-up shaft journalledin the loom yielding connections betweenthe shaft and' the cloth roll for raising and lowering ,the cloth rollwhen the shaft is rotated and for permitting thecloth roll to rnove downas the cloth is wound thereon without rotating the shaft, a handleremovably connectible to the shaft for rotating it, and meansoperable tolock the shaft against rotation upon removal of the handle.

2. A loom comprising a driven take-up roll, a cloth roll upon which thecloth is Y wound by the frictional engagement of the cloth mass thereonwith the take-up roll, a wind-up shaft journalled inthe loomtransversely of and beneath the cloth roll, yielding connections betweenthe shaft and the cloth roll for raising and lowering the cloth rollwhen the shaft is rotated and for permitting the cloth roll to move downas the cloth is wound thereon without rotating the shaft,

a handle removably-connectible to the shaft for rotating it, and'meansacting automati-i cally to lockthe shaft against rotation-upon removalof the handle. 7

3. A. loom comprising a driven take-up roll, a cloth rollupon whichsthecloth is versely of and beneath the cloth roll, yield-.

wound by. the frictional engagement of the cloth mass thereon with thetake-up roll, a wind-up shaft journalled in the 100m transingconnections between the shaft and the cloth roll for raising andlowering the cloth roll when the shaft is rotated and for permitting thecloth roll to move down as the cloth is wound thereon withoutro'tatingthe shaft, a handle re'movably connectible to the shaft for rotating it,and a l'atchfpivoted on the 100m operable to prevent rotation of the ashaft when the handle is removed therefrom.

74;. A loom comprising a driven take-up roll, a cloth roll upon whichthe cloth is wound by the frictional engagement of the cloth massthereon with the take-up roll, a

, wind-up shaft journalled in the loom transversely of and beneath thecloth roll, yielding connections between the shaft and the cloth rollfor raising and lowering the cloth roll 7 when the shaft is rotated andfor permitting the cloth 'roll to move down as the cloth is woundthereon without rotating the shaft, a'handle removably connectible tothe shaft for rotating it, a latch pivoted on the loom V acting byengagement with the shaft to lock said handle extension and held out oflocking' engagement by said handle extension 7 l i when it is initsoperating position. i

6. A loom comprising a driven take-up roll, a cloth roll upon which. thecloth is wound by. the frictional engagementof the cloth mass thereonwith the take-up roll, a

wind-up shaft ournalled in the loom trans versely of and beneath thecloth roll, yielding connectionsbetween the shaft and the cloth rollforraising and lowering the clothroll V 1' when the shaft is rotated andfor permitting.

the cloth roll to move down as thecloth is, V

wound thereon without rotating the shaft, a handle removably connectibleto the shaft for rotating it, a sleeve onthe shaft open at its end toreceive the handle, a latch pivotedupon the loomacting to lockthe shaftagainst rotation byengagement with the end of said sleeve upon removalof the handle. 1 '7. A loom comprising a driven take-up roll, a'clothroll upon which the cloth is wound by the frictional engagement of thecloth of the mass thereon with the take-up roll, a wind-up shaftjournalled in the loom transverselyof and beneath the cloth roll,yielding connections between the shaft and the cloth roll for raisingand lowering the cloth roll when the shaft is rotated and 'for'permitting the cloth roll to move down as the cloth is wound thereonwithout rotating the shaft, a handle removably connectible to the shaftfor rotating it, a sleeve on the shaft open at its end to receive thehandle and having notches therein, a gravity actuated handle.

name to this specification. I

VERNER LINDSJO. v

roll to move down as the cloth-is wound thereon without rotating theshaft, a handle extension removably connectible to the shaft forrotating it, a latch pivoted on the loom adjacent the end of said shaftacting to lock said shaft against rotation upon removal of In testimonywhereof, I have signed my s .100 latch .pivote'd'uponthe loom acting tolock 1 the shaft against rotation by engagement with said notches uponremoval of the

